App
Customer Support
KRW
Find Bookings
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap flight deals from St. Louis to Williston Starting at KRW 632,200

Discover our range of affordable one-way and round-trip flights from St. Louis to Williston and kick-start your next adventure today!

  • Round-trip
      • STL16:30
        7h 27m
        1 stop
        XWA23:57
        Fri, Mar 21|St. Louis - Williston|United Airlines
        XWA15:00
        6h 34m
        1 stop
        STL21:34
        Mon, Mar 24|Williston - St. Louis|United Airlines
        KRW 632,200KRW 1,423,864
        56% OFF
        56% OFF
        KRW 1,423,864KRW 632,200

        Choose United Airlines flights from St. Louis to Williston. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Fri, Mar 21-Mon, Mar 24, arriving at Williston Basin International Airport. One-way Prices start from KRW 632,200 including taxes and charges.

      • STL06:00
        6h 5m
        1 stop
        XWA12:05
        Thu, Mar 6|St. Louis - Williston|Delta Air Lines
        XWA07:10
        9h 42m
        1 stop
        STL16:52
        Mon, Mar 10|Williston - St. Louis|Delta Air Lines
        KRW 658,000KRW 1,423,864
        54% OFF
        54% OFF
        KRW 1,423,864KRW 658,000

        Choose Delta Air Lines flights from St. Louis to Williston. The one-way connecting flight with Delta Air Lines departs from St. Louis Lambert International Airport on Thu, Mar 6-Mon, Mar 10, arriving at Williston Basin International Airport. One-way Prices start from KRW 658,000 including taxes and charges.

      • STL13:45
        10h 12m
        1 stop
        XWA23:57
        Thu, Mar 6|St. Louis - Williston|United Airlines
        XWA15:00
        6h 34m
        1 stop
        STL21:34
        Mon, Mar 10|Williston - St. Louis|United Airlines
        KRW 716,400KRW 1,423,864
        50% OFF
        50% OFF
        KRW 1,423,864KRW 716,400

        Choose United Airlines flights from St. Louis to Williston. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Thu, Mar 6-Mon, Mar 10, arriving at Williston Basin International Airport. One-way Prices start from KRW 716,400 including taxes and charges.

      • STL17:24
        23h
        2 stops
        XWA16:24
        Thu, Mar 6|St. Louis - Williston|Frontier Airlines
        XWA07:20
        16h 29m
        2 stops
        STL23:49
        Mon, Mar 10|Williston - St. Louis|United Airlines
        KRW 792,000
        KRW 792,000

        Choose Frontier Airlines flights from St. Louis to Williston. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Thu, Mar 6-Mon, Mar 10, arriving at Williston Basin International Airport. One-way Prices start from KRW 792,000 including taxes and charges.

      • STL11:39
        12h 18m
        2 stops
        XWA23:57
        Thu, Mar 6|St. Louis - Williston|American Airlines
        XWA11:34
        20h 35m
        2 stops
        STL08:09
        Mon, Mar 10|Williston - St. Louis|United Airlines
        KRW 967,400
        KRW 967,400

        Choose American Airlines flights from St. Louis to Williston. The one-way connecting flight with American Airlines departs from St. Louis Lambert International Airport on Thu, Mar 6-Mon, Mar 10, arriving at Williston Basin International Airport. One-way Prices start from KRW 967,400 including taxes and charges.

      • STL06:00
        6h
        1 stop
        XWA12:00
        Fri, Mar 21|St. Louis - Williston|Delta Air Lines
        XWA07:10
        8h 21m
        1 stop
        STL15:31
        Mon, Mar 24|Williston - St. Louis|Delta Air Lines
        KRW 1,253,000
        KRW 1,253,000

        Choose Delta Air Lines flights from St. Louis to Williston. The one-way connecting flight with Delta Air Lines departs from St. Louis Lambert International Airport on Fri, Mar 21-Mon, Mar 24, arriving at Williston Basin International Airport. One-way Prices start from KRW 1,253,000 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        ISN02:00 pm
        Sun, Feb 23|St. Louis - Williston|United Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

St. Louis to Williston flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL1597

    Delta Air Lines

    06:30

    STL

    1.7h

    08:12

    MSP

    SMTWTFS
    Search

  2. DL4261

    Delta Air Lines

    10:00

    MSP

    2.0h

    12:00

    XWA

    SMTWTFS

  3. AA1362

    American Airlines

    11:25

    STL

    2.1h

    13:31

    DFW

    SMTWTFS
    Search

  4. AA1832

    American Airlines

    14:33

    DFW

    2.2h

    15:46

    DEN

    SMTWTFS

  5. UA5261

    United Airlines

    21:05

    DEN

    1.9h

    23:59

    XWA

    SMTWTFS

  6. UA2625

    United Airlines

    13:41

    STL

    2.5h

    15:10

    DEN

    SMTWTFS
    Search

  7. UA5261

    United Airlines

    21:05

    DEN

    1.9h

    23:59

    XWA

    SMTWTFS

  8. UA1004

    United Airlines

    16:30

    STL

    2.3h

    17:50

    DEN

    SMTWTFS
    Search

  9. UA5261

    United Airlines

    21:05

    DEN

    1.9h

    23:59

    XWA

    SMTWTFS
Find more flights and airlines

When is the cheapest time to fly from St. Louis to Williston?

Explore the best time to buy affordable tickets to Williston with our price trend chart, which predicts how flight prices will change in the coming weeks from previous data.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from St. Louis (STL) to Williston (ISN) the cheapest?

    Airlines adjust prices for flights from St. Louis to Williston based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from St. Louis (STL) to Williston (ISN) cost?

    According to Trip.com's data, the lowest price is around KRW 715,200.

  • What is the transportation method from the main airport to downtown in Williston?

    • The distance from Williston Basin International Airport to downtown is about 15 km, by taxi about 30 minutes.

  • How many airports are there in Williston (ISN)?

    There are 2 airport(s) near Williston (ISN): Sloulin Field International Airport and Williston Basin International Airport.

How to find a cheap flight from St. Louis to Williston

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | St. Louis to Williston

Off-season for travelJanuary
Peak season for travelJanuary
Flight distance1,516.76 km
Popular airlineAmerican Airlines

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.